DuroMax XP5500EH oil type and capacity, spark plug and battery
GarageDex's data from DuroMax's own published specs: the DuroMax XP5500EH takes 10W-30 oil (20 fl oz (0.6 L)) and an F7RTJC type, e.g. NGK BP6ET spark plug gapped 0.7-0.8 mm (0.028-0.031 in). It is rated 4,500 running watts and 5,500 starting watts.
Shop 10W-30 oil The spec in the DuroMax XP5500EH manual
Key takeaways
- Oil capacity: 20 fl oz (0.6 L). Add it in stages and stop at the dipstick's full mark rather than pouring the whole amount at once.
- Spark plug: F7RTJC type, e.g. NGK BP6ET, gap 0.7-0.8 mm (0.028-0.031 in).
- Every value on this page is quoted from DuroMax's own manual or spec page, linked beside it.
| Item | Spec | From the manual |
|---|---|---|
| Engine oil | SAE 10W-30viscosity chart by temperature in manual | “Engine oil recommended: SAE 10W-30.” source |
| Oil capacity | 20 fl oz (0.6 L) | “Engine Oil Capacity 20 fl. oz (0.6L)” source |
| Spark plug | F7RTJC type, e.g. NGK BP6ET | “using an F7RTJC spark plug such as NGK BP6ET.” source |
| Spark plug gap | 0.7-0.8 mm (0.028-0.031 in) | “The gap should be 0.7-0.8 mm (0.028-0.031 in).” source |
| Starter battery | 12V DC | “Battery - 12V DC Battery that powers the electric start system.” source |
| Fuel tank | 4 US gal (15.14 L) | “Gas Tank Capacity 4 US gal. (15.14 L)” source |
| First oil change | change oil after first 6-8 hours (conventional oil during break-in) | “Run the generator for the first 6-8 hours on conventional oil, then change the oil.” source |
Parts for the DuroMax XP5500EH
Each Buy button searches Amazon for the exact spec in the manual.
- Engine oil10W-30, 20 fl oz (0.6 L)Buy
- Spark plugF7RTJC type, e.g. NGK BP6ETBuy
- Starter battery12V DCBuy
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Other DuroMax generators
Source: DuroMax XP5500EH Owner's Manual (PDF). If your unit's own manual or label differs, follow it.